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LAB 127

# LAB 127 - LAB 127 TORGQUE INERTIA AND ROTATIONAL KINETIC...

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LAB 127: TORGQUE, INERTIA AND ROTATIONAL KINETIC ENERGY Livia Kuruvila Amy Patel Kunal Rana Vikram Ramkumar Dhruv Lad Phys 111A-001 November 18, 2010 Chiranjivi Lamsal

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Introduction: Through this lab we were looking to understand the theory that applies to rotational motion for objects under constant torque. The torque is applied by the rotating disc or cylinder by the string attached to a falling weight. The frequency is being read every two seconds. The frequency is used to calculate the angular velocity of the disk in radians per second. In part I of the lab we are determine the rotational inertia of rotating bodies by measuring their angular acceleration and comparing the measurement with rotational inertia. In part II of the experiment, we are calculating the energy loss of the system compared to the mechanical energy at two points. The definition of torque is defined as Τ =Fr 1 ; r is the shortest distance between the line of F and axis of rotation. The rotational inertia for a
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